23
Process Management - exec
• 6 forms: execl, execve, execvp,
execv, execve, execvp
if ( (pid = fork()) < 0)
perrror("fork");
else if (pid == 0) /* child */
{
if (execl("/bin/echo",
"echo", "child:", "hello", "world", (char *) 0) < 0)
perror("execl");
printf("child: this never prints\n");
}
